Step 4: Cutting and Gluing 1/4" pieces
I cut four 5x5 inch pieces of 1/4" plwood that I could glue to the 3/4" to make the table thick enough to hold the legs.
Using a straight edge, I found the center points of each 5x5 square, and marked it with an X. This way, I knew where to center each bracket over the bonded plywood.
I roughed up the corners of the 3/4" plywood slab, and then anchored the 5x5 plates with glue.
After clamping for 30 minutes, the glue was set.